/* $Id: drv_LPH7508.c,v 1.1 2005/11/04 14:10:38 reinelt Exp $ * * driver for Pollin LPH7508 * * Copyright (C) 2005 Michael Reinelt * Copyright (C) 2005 The LCD4Linux Team * * This file is part of LCD4Linux. * * LCD4Linux is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2, or (at your option) * any later version. * * LCD4Linux is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. * * * $Log: drv_LPH7508.c,v $ * Revision 1.1 2005/11/04 14:10:38 reinelt * drv_Sample and drv_LPH7508 * */ /* * * exported fuctions: * * struct DRIVER drv_LPH7508 * */ #include "config.h" #include #include #include #include #include #include #include #include #include "debug.h" #include "cfg.h" #include "qprintf.h" #include "udelay.h" #include "plugin.h" #include "widget.h" #include "widget_text.h" #include "widget_icon.h" #include "widget_bar.h" #include "drv.h" #include "drv_generic_graphic.h" #include "drv_generic_parport.h" #ifdef WITH_DMALLOC #include #endif static char Name[] = "LPH7508"; static unsigned char SIGNAL_RES; static unsigned char SIGNAL_CS1; static unsigned char SIGNAL_RW; static unsigned char SIGNAL_A0; static int PAGES, SROWS, SCOLS; unsigned char *Buffer1, *Buffer2; /****************************************/ /*** hardware dependant functions ***/ /****************************************/ static void drv_L7_write_ctrl(const unsigned char data) { /* Fixme: busy-check??? */ /* put data on DB1..DB8 */ drv_generic_parport_data(data); /* CS1 = high, RW = low, A0 = low */ drv_generic_parport_control(SIGNAL_CS1 | SIGNAL_RW | SIGNAL_A0, SIGNAL_CS1); /* Fixme: setup time? */ ndelay(100); /* Fixme: toggle time? */ drv_generic_parport_toggle(SIGNAL_CS1, 0, 100); ndelay(100); // Fixme } static void drv_L7_write_data(const unsigned char data) { /* Fixme: busy-check??? */ /* put data on DB1..DB8 */ drv_generic_parport_data(data); /* CS1 = high, RW = low, A0 = high */ drv_generic_parport_control(SIGNAL_CS1 | SIGNAL_RW | SIGNAL_A0, SIGNAL_CS1 | SIGNAL_A0); /* Fixme: setup time? */ ndelay(100); /* Fixme: toggle time? */ drv_generic_parport_toggle(SIGNAL_CS1, 0, 100); ndelay(100); // Fixme } static void drv_L7_blit(const int row, const int col, const int height, const int width) { int r, c; /* transfer layout to display framebuffer */ for (r = row; r < row + height; r++) { if (r >= SROWS) break; int p = r / 8; /* page */ for (c = col; c < col + width; c++) { if (c >= SCOLS) break; int a = p * SCOLS + c; /* RAM address */ unsigned char m = 1 << (r % 8); /* bit mask */ if (drv_generic_graphic_FB[r * LCOLS + c]) { /* set bit */ Buffer1[a] |= m; } else { /* clear bit */ Buffer1[a] &= ~m; } } } /* process display framebuffer */ } static int drv_L7_start(const char *section) { char *s; /* fixed size */ DROWS = 64; DCOLS = 100; /* SED1560 display RAM layout */ PAGES = 8; SROWS = PAGES * 8; SCOLS = 166; s = cfg_get(section, "Font", "6x8"); if (s == NULL || *s == '\0') { error("%s: no '%s.Font' entry from %s", Name, section, cfg_source()); return -1; } XRES = -1; YRES = -1; if (sscanf(s, "%dx%d", &XRES, &YRES) != 2 || XRES < 1 || YRES < 1) { error("%s: bad Font '%s' from %s", Name, s, cfg_source()); return -1; } /* Fixme: provider other fonts someday... */ if (XRES != 6 && YRES != 8) { error("%s: bad Font '%s' from %s (only 6x8 at the moment)", Name, s, cfg_source()); return -1; } /* provide room for page 8 (symbols) */ Buffer1 = malloc((PAGES + 1) * SCOLS); if (Buffer1 == NULL) { error("%s: framebuffer #1 could not be allocated: malloc() failed", Name); return -1; } Buffer2 = malloc((PAGES + 1) * SCOLS); if (Buffer2 == NULL) { error("%s: framebuffer #2 could not be allocated: malloc() failed", Name); return -1; } memset(Buffer1, 0, (PAGES + 1) * SCOLS * sizeof(*Buffer1)); memset(Buffer2, 0, (PAGES + 1) * SCOLS * sizeof(*Buffer2)); if (drv_generic_parport_open(section, Name) != 0) { error("%s: could not initialize parallel port!", Name); return -1; } if ((SIGNAL_RES = drv_generic_parport_hardwire_ctrl("RES", "INIT")) == 0xff) return -1; if ((SIGNAL_CS1 = drv_generic_parport_hardwire_ctrl("CS1", "STROBE")) == 0xff) return -1; if ((SIGNAL_RW = drv_generic_parport_hardwire_ctrl("RW", "SLCTIN")) == 0xff) return -1; if ((SIGNAL_A0 = drv_generic_parport_hardwire_ctrl("A0", "AUTOFD")) == 0xff) return -1; /* rise RES, CS1, RW and A0 */ drv_generic_parport_control(SIGNAL_RES | SIGNAL_CS1 | SIGNAL_RW | SIGNAL_A0, SIGNAL_RES | SIGNAL_CS1 | SIGNAL_RW | SIGNAL_A0); /* set direction: write */ drv_generic_parport_direction(0); /* reset display: lower RESET for 1 usec */ drv_generic_parport_control(SIGNAL_RES, 0); udelay(1); drv_generic_parport_control(SIGNAL_RES, SIGNAL_RES); udelay(1); /* just to make sure: send a software reset */ drv_L7_write_ctrl(0xe2); /* initialize display */ drv_L7_write_ctrl(0x40); /* Start Display Line = 0 */ drv_L7_write_ctrl(0x20); /* reverse line driving release */ drv_L7_write_ctrl(0xCC); /* OutputStatus = $0C, 102x64 */ drv_L7_write_ctrl(0xA0); /* ADC = normal */ drv_L7_write_ctrl(0xA9); /* LCD-Duty = 1/64 */ drv_L7_write_ctrl(0xAB); /* LCD-Duty +1 (1/65, symbols) */ drv_L7_write_ctrl(0x25); /* power supply on */ udelay(100); drv_L7_write_ctrl(0xED); /* power supply on completion */ /* clear display */ /* Fixme drv_L7_clear(); */ return 0; } /****************************************/ /*** plugins ***/ /****************************************/ /* none at the moment... */ /****************************************/ /*** widget callbacks ***/ /****************************************/ /* using drv_generic_graphic_draw(W) */ /* using drv_generic_graphic_icon_draw(W) */ /* using drv_generic_graphic_bar_draw(W) */ /****************************************/ /*** exported functions ***/ /****************************************/ /* list models */ int drv_L7_list(void) { printf("LPH7508"); return 0; } /* initialize driver & display */ int drv_L7_init(const char *section, const int quiet) { WIDGET_CLASS wc; int ret; /* real worker functions */ drv_generic_graphic_real_blit = drv_L7_blit; /* start display */ if ((ret = drv_L7_start(section)) != 0) return ret; /* initialize generic graphic driver */ if ((ret = drv_generic_graphic_init(section, Name)) != 0) return ret; if (!quiet) { char buffer[40]; qprintf(buffer, sizeof(buffer), "%s %dx%d", Name, DCOLS, DROWS); if (drv_generic_graphic_greet(buffer, NULL)) { sleep(3); drv_generic_graphic_clear(); } } /* register text widget */ wc = Widget_Text; wc.draw = drv_generic_graphic_draw; widget_register(&wc); /* register icon widget */ wc = Widget_Icon; wc.draw = drv_generic_graphic_icon_draw; widget_register(&wc); /* register bar widget */ wc = Widget_Bar; wc.draw = drv_generic_graphic_bar_draw; widget_register(&wc); /* register plugins */ /* none at the moment... */ return 0; } /* close driver & display */ int drv_L7_quit(const int quiet) { info("%s: shutting down.", Name); drv_generic_graphic_clear(); if (!quiet) { drv_generic_graphic_greet("goodbye!", NULL); } drv_generic_graphic_quit(); drv_generic_parport_close(); if (Buffer1) { free(Buffer1); Buffer1 = NULL; } if (Buffer2) { free(Buffer2); Buffer2 = NULL; } return (0); } DRIVER drv_LPH7508 = { name:Name, list:drv_L7_list, init:drv_L7_init, quit:drv_L7_quit, };